An animation on the relative size of familiar and unfamiliar forms of life:
https://www.cellsalive.com/howbig_js.htm
What stops cells from just growing and growing?
http://www.brooklyn.cuny.edu/bc/ahp/LAD/C5/C5_ProbSize.html
This is an old classic video on relative sizes in the Universe.
Possible activities:
- Make a booklet / poster or art installation of sizes going up in powers of 10.
- Make a graph of Volume versus Surface areas for the following solid shapes: cube, sphere, cylinder (varying height; varying diameter). Describe the conclusion you can draw from each graph. Compare graphs and describe your conclusion.
- E. Coli divides every 20 minutes. Starting with one, and assuming an infinite food source, how many would we have in a week? Graph the growth by hourly intervals.